JP2015191555A - Portable console, control method for portable console, control program for portable console, and photographing skill analysis system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable console, the control method of the portable console, the control program of the portable console, and a photographing skill evaluation system using the portable console capable of measuring the positioning time of a photographing engineer.SOLUTION: A portable console 27 is carried by a photographing engineer so as to be moved between a photographing room R1 and a control room R2. A radio communication part 42 is connected to one of a first AP 14a and a second AP 14b of the photographing room R1 and the control room R2 in accordance with radio field intensity. An entrance/exit time detection part 71 detects the entrance time and exit time of the photographing engineer to and from the photographing room on the basis of the connection switching of the radio communication part 42. A stay time calculation part 72 calculates the stay time of the photographing engineer in the photographing room R1 on the basis of the entrance time and exit time, and stores the stay time as the positioning time of the photographing engineer in a positioning time storage part 27J.

Description

  The present invention relates to a portable console used for operation of a medical imaging apparatus, a portable console control method, a portable console control program, and an imaging skill analysis system using the portable console.

  In the medical field, inspection work for taking a medical image with a medical image taking apparatus is performed. As a medical imaging apparatus, a radiographic apparatus that detects a radiographic image of a subject using radiation (for example, X-rays) that has passed through the subject (patient) is known. The radiation imaging apparatus is combined with a radiation generation apparatus that generates radiation, and is used for radiation imaging as a radiation imaging system. The radiation generation apparatus includes a radiation source that irradiates radiation toward a subject, a radiation source control apparatus that controls driving of the radiation source, and an irradiation switch that inputs an instruction for operating the radiation source to the radiation source control apparatus. ing.

  The radiation detection apparatus includes a radiation image detection apparatus and a console used for operation of the radiation image detection apparatus. The radiation image detection apparatus has a sensor panel also called a flat panel detector (FPD), and detects a radiation image by converting radiation transmitted through a subject by the sensor panel into an electrical signal. The console sets imaging conditions corresponding to the imaging technique for the radiological image detection apparatus. An imaging technique is an imaging technique used for radiography, such as an imaging part, an imaging direction, and an imaging posture. Since the radiation image detection apparatus transmits the detected radiation image to the console, the image can be displayed and confirmed on the console.

  Among radiation imaging systems, a radiation source and a radiation image detection device are installed in an imaging room shielded with lead or the like so that radiation does not leak outside. Since the irradiation switch and the console are installed in the operation room adjacent to the imaging room, the radiographing imaging engineer can operate the radiation source and the radiological image detection apparatus from the operating room outside the imaging room. Conventionally, a desktop computer has been used as a console. However, with the improvement of the performance of portable information terminals such as smartphones, tablet terminals, and notebook computers, portable consoles using portable information terminals are also known. . Since the portable console can be carried by a radiographer, it can be brought into the radiographing room and operated near the radiographic image detection apparatus.

  Since medical image photographing devices are expensive, operation with poor efficiency may adversely affect the management of medical facilities. For this reason, in medical facilities, a workflow, which is a series of inspection operations using a medical imaging apparatus, is analyzed, and the efficiency of inspection operations is improved based on the analysis results. In addition, a workflow analysis report creation system that analyzes a workflow of an inspection work and creates a report has been proposed in order to support improvement in the efficiency of the inspection work (see, for example, Patent Document 1).

  The workflow analysis report creation system of Patent Document 1 includes a plurality of human tracking sensors, a service processor, and a report creation server. The human tracking sensor is a sensor that detects the behavior of the imaging engineer in the imaging room and the operation room. For example, a video camera that images the imaging engineer is used. The service processor is a device that collects information that is an analysis material of the workflow. The service processor acquires operation information representing the operation content of the medical image photographing device from the console of the medical image photographing device, and outputs the operation information to the report creation server. In addition, the service processor analyzes the video captured by the human tracking sensor, identifies the imaging engineer, identifies the action content, the action location, and the action time, and sends these to the report creation server as action information of the imaging engineer. Output. The report creation server analyzes the workflow of the inspection work including the action of the photographing engineer based on the operation information and the action information of the photographing engineer, and creates a report based on the analysis result. If this workflow analysis report creation system is used, useless parts of inspection work using a medical imaging apparatus and parts that need improvement can be found, which is useful for improving the efficiency of inspection work.

JP 2005-293301 A

  In medical facilities, as one of the measures for improving the efficiency of the inspection work, in addition to the analysis of the inspection work workflow described above, the photographing skill of the photographing engineer is improved. If the photography skills of the photographer improve, the mistakes of photography are reduced and the photographing time is shortened, so that the efficiency of inspection work is improved. The medical facility evaluates the shooting skills of the shooting engineer and educates the shooting engineer based on the evaluation results in order to improve the shooting skills of the shooting engineer. Otherwise, in order to improve the shooting skill, it is important to accurately evaluate the shooting skill of each shooting engineer.

  As information that can be used for quantitative evaluation of the imaging skill, a positioning time required for relative alignment (also referred to as positioning) between the subject and the medical image capturing apparatus can be used. For example, in radiography, positioning of a subject and a radiation image detection device and positioning of a radiation source with respect to the subject and the radiation image detection device are performed. In radiography, positioning time occupies most of the time required for radiography. It has also been found that the positioning time is shortened as the imaging engineer gains imaging experience and improves the imaging skill. As described above, since the shooting skill and the positioning time are closely related, the shooting skill of the shooting engineer can be accurately evaluated by measuring the positioning time of the shooting engineer.

  The positioning time can be measured by a photographer using a clock or stopwatch. However, since the inspection work is complicated by the measurement work, it is desirable that measurement can be performed without human intervention. For example, if the workflow analysis report creation system of Patent Document 1 is used, the positioning time can be measured based on the action information of the radiographer. However, the workflow analysis report creation system requires a large amount of equipment such as multiple human tracking sensors, service processors, and report creation servers. . Moreover, in patent document 1, a patient will also be image | photographed when imaging | photography an imaging technician. In radiography, there is a case where the patient is undressed, and it is ethically problematic that the patient in the imaging room is imaged by the human tracking sensor.

  The present invention relates to a portable console capable of measuring a positioning time in order to accurately evaluate a photographing skill of a photographing engineer, a portable console control method, a portable console control program, and photographing using the portable console. The purpose is to provide a skill evaluation system.

  In order to achieve the above object, the portable console of the present invention includes an entry / exit time detection unit, a occupancy time calculation unit, and a positioning time storage unit. The entry / exit time detection unit detects the entry time to the photography room and the exit time from the photography room of the photography engineer carrying the portable console. The occupancy time calculation unit calculates the occupancy time of the radiographer's photographic room based on the entry time and the exit time. The positioning time storage unit stores the occupancy time when taking a medical image using a shooting technique in association with the shooting technique as the positioning time used for relative alignment between the subject and the medical image shooting apparatus. To do.

  The positioning time is preferably an integrated value of the occupancy time within the time from the start of the shooting preparation work to the start of shooting.

  A wireless communication unit that communicates with a wireless communication device installed in at least one of the shooting room and the outside of the shooting room is provided, and the entrance / exit time detection unit communicates between the wireless communication unit and the wireless communication device. It is preferable that the position where the imaging engineer moves is specified based on the above and the time when the imaging engineer moves into the imaging room and the time when the imaging engineer moves out of the imaging room are detected as the entry time and the exit time.

  The wireless communication device is a first wireless communication device that connects to the wireless communication unit when the imaging technician moves into the examination room, and a second wireless communication device that connects to the wireless communication unit when the imaging technician moves out of the examination room. And the entry / exit time detection unit is configured such that when the wireless communication unit switches the connection between the first wireless communication device and the second wireless communication device, the wireless communication unit detects whether the first wireless communication device and the second wireless communication device are connected. It is preferable to specify the current position based on the acquired identification information.

  The entry / exit time detection unit preferably specifies the position where the imaging technician has moved based on the radio wave intensity between the wireless communication unit and the wireless communication device.

  The wireless communication device is preferably a wireless repeater that relays the connection between the wireless communication unit and the communication network.

  The wireless communication device is preferably a wireless communication tag that transmits radio waves, and the wireless communication unit is preferably a tag reader that receives radio waves transmitted from the wireless communication tag.

  The entry / exit time detection unit is preferably a GPS reception unit that identifies the position and time of movement of the imaging technician based on the GPS signal.

  When the medical image photographing apparatus has a function of measuring the positioning time, the positioning time storage unit preferably stores the positioning time acquired from the medical image photographing apparatus in association with the photographing technique.

  The medical imaging apparatus is preferably a portable radiographic image detection apparatus that detects a radiographic image from radiation that has passed through the subject.

  It is preferable to include a skill analysis unit that analyzes the imaging skill of the imaging engineer based on the positioning time, and an analysis result display control unit that displays the analysis result on the display.

  The control method of the portable console of the present invention is based on an entry / exit time detection step for detecting an entry time to the photography room of the imaging technician, an exit time from the photography room, an entry time, and an exit time, The occupant time calculation step for calculating the occupant's occupancy time in the radiographing room and the occupancy time when taking a medical image with the imaging technique are used for relative alignment between the subject and the medical imaging device. And a positioning time storage step of storing the positioning time in the positioning time storage unit in association with the photographing technique.

  The control program for a portable console of the present invention causes a computer to execute an entry / exit time detection step, an occupancy time calculation step, and a positioning time storage step.

  The imaging skill analysis system of the present invention includes a portable console and a skill analysis server that analyzes the imaging skill of the imaging engineer based on information acquired from the portable console. The portable console is used for the relative positioning of the subject and the medical image capturing device using the room staying time when the medical image is taken by the photographing technique. A positioning time information transmitting unit that transmits positioning time information that associates the positioning time and the imaging technique to the skill analysis server. The skill analysis server includes a positioning time information storage unit that stores positioning time information transmitted from the portable console, a skill analysis unit that analyzes a shooting skill for each shooting technique of the shooting engineer based on the positioning time information, and an analysis And a distribution unit that distributes the results to the portable console.

  The imaging skill analysis server preferably includes an advice information creation unit that creates advice information for the imaging engineer based on the analysis result.

  In the present invention, the entrance / exit time detection unit detects the entrance time and exit time of the photography engineer into the photography room, and the stay time calculation unit detects the presence of the photography engineer's photography room based on the entry time and the exit time. Calculate the room time. The radiographer who is in the radiographing room during the radiography preparation work spends most of his time on positioning, so the calculated in-house time is positioned along with the procedure information as the radiographer's positioning time. It can be stored in the time storage unit. According to the present invention, it is possible to measure the positioning time of the photographing engineer in order to accurately evaluate the photographing skill of the photographing engineer.

It is a block diagram of the radiography system installed in the imaging room and the operation room. It is a block diagram of a radiography apparatus. It is a perspective view which shows the external appearance shape of a radiographic image detection apparatus. It is a block diagram which shows the electric constitution of the portable information terminal which comprises a portable console. It is a table | surface which shows the structure of a positioning time storage part. It is explanatory drawing of the operation screen of a portable console. It is a block diagram which shows the function of CPU of a portable console. It is explanatory drawing of the sequence which connects a portable console and an access point. It is explanatory drawing of roaming. It is a time chart showing occupancy time at the time of entering a photography room from an operation room. It is a time chart showing occupancy time in the case of entering into a photography room. It is a time chart showing occupancy time when positioning is performed again. It is explanatory drawing of the analysis result display screen of the imaging | photography skill of a portable console. It is a flowchart which shows the calculation procedure of positioning time. It is a flowchart which shows the detection procedure of entrance / exit time. It is a flowchart which shows the analysis result display procedure of imaging skill. It is a block diagram which shows the function of CPU of the portable console of 2nd Embodiment. It is explanatory drawing which shows the electromagnetic wave intensity of the access point of 2nd Embodiment. It is a figure which shows the radiography system installed in the imaging | photography room and operation room of 3rd Embodiment. It is a block diagram which shows the function of CPU of the portable console of 3rd Embodiment. It is a block diagram which shows the function of CPU of the portable console of 4th Embodiment. It is a block diagram which shows the function of CPU of the portable console of 5th Embodiment. It is a flowchart which shows the acquisition procedure of the positioning time of 5th Embodiment. It is explanatory drawing which shows the functional structure of the portable console and skill analysis server of 6th Embodiment. It is explanatory drawing of the analysis result display screen of the imaging technician of 6th Embodiment. It is explanatory drawing of the analysis result display screen of the several photography engineer of 6th Embodiment.

[First embodiment]
In FIG. 1, a radiation imaging system 10 is an imaging system that captures a radiation image as a medical image. Each device constituting the radiation imaging system 10 is distributed and installed in an imaging room R1 of a medical facility and an operation room R2 adjacent to the imaging room R1. In the imaging room R1, radiation imaging by the radiation imaging system 10 is performed. The operation room R2 is a room for the radiographing engineer T to give a radiographing instruction to the radiography system 10 from outside the radiographing room R1. The operation room R2 is provided with a door R2a for entering and leaving the operation room R2 from other sections of the medical facility. In addition, a door R1a is provided between the photographing room R1 and the operation room R2 so as to enter and leave the photographing room R1 from the operation room R2. The floor, wall surface, ceiling, and door R1a of the photographing room R1 are shielded with lead or the like so that radiation does not leak from the photographing room R1.

  When performing radiography, the imaging technician T and the patient (subject) P enter the imaging room R1 through the door R2a and the door R1a. The radiographer T performs preparatory work for radiography in the radiographing room R1, such as positioning, which is a relative alignment between the radiographic system 10 and the patient P, and setting of imaging conditions. After completing the preparatory work, the imaging technician T moves from the imaging room R1 to the operation room R2 as indicated by a two-dot chain line, and instructs the radiation imaging system 10 to start radiography.

  An access point (AP) 14 for connecting a wireless terminal to a LAN (Local Area Network) 13 which is a communication network in the hospital is installed at an important point in the imaging room R1, the operation room R2, and other medical facilities. Has been. The AP 14 corresponds to the wireless communication device and the wireless repeater of the present invention. The AP 14 includes a wireless communication unit for communicating with a wireless terminal and a wired communication unit for connecting to the LAN 13 via a communication cable. The wireless communication unit conforms to a wireless LAN standard such as IEEE802.11n, for example. Since the radio wave is difficult for the radiographing room R1 to reach due to a shield for preventing radiation leakage, the AP 14 is installed in each of the radiographing room R1 and the operation room R2. In addition, in order to identify the APs 14 in the imaging room R1 and the operation room R2, they are hereinafter referred to as a first AP 14a and a second AP 14b, respectively.

  The radiation imaging system 10 includes a radiation generation device 17 and a radiation imaging device 18. The radiation generator 17 includes a radiation source 19 installed in the imaging room R1, a radiation source controller 20 that controls the radiation source 19, and an irradiation switch 21 installed in the operation room R2. The radiation source 19 includes a radiation tube that emits radiation (for example, X-rays) and an irradiation field limiter (collimator) that limits an irradiation field of radiation emitted by the radiation tube.

  The radiation source control device 20 controls the radiation source 19 based on imaging conditions such as a tube voltage that determines the energy spectrum of radiation, a tube current that determines the amount of irradiation per unit time, and an irradiation time during which radiation irradiation continues. . Imaging conditions such as tube voltage, tube current, and irradiation time are manually set by the imaging technician T through an operation panel (not shown) of the radiation source control device 20. The irradiation switch 21 is operated by the photographing engineer T and generates an irradiation start signal for causing the radiation source 19 to start irradiation. An irradiation start signal generated by the irradiation switch 21 is input to the radiation source control device 20 through a signal cable.

  The radiation source control device 20 controls the operation of the radiation source 19 based on a signal from the irradiation switch 21. When receiving the irradiation start signal from the irradiation switch 21, the radiation source control device 20 starts supplying power to the radiation source 19 and activates a timer to start measuring the irradiation time of radiation. Then, when the irradiation time set in the imaging conditions has elapsed, the radiation source control device 20 stops the radiation irradiation. The irradiation time of radiation changes according to irradiation conditions. The radiation source control device 20 is set with a maximum irradiation time in accordance with safety regulations, and the irradiation time set based on the irradiation condition is set within the range of the maximum irradiation time.

  The radiation imaging apparatus 18 includes a radiation image detection apparatus 24, an imaging table 25, an imaging control apparatus 26, and a portable console 27. The radiographic image detection device 24 is a medical image photographing device of the present invention, and includes a casing 48 (see FIG. 3) that is flat and flat and has a rectangular planar shape. The casing 48 has a shape conforming to the international standard ISO 4090: 2001 for film cassettes and IP cassettes. Therefore, the radiation image detection device 24 is generally called an electronic cassette. The radiation image detection device 24 detects a radiation image of the patient P based on the radiation irradiated from the radiation source 19 and transmitted through the patient P.

  The photographing stand 25 is a standing photographing stand used when photographing the patient P in a standing posture. The imaging stand 25 has a slot to which the radiation image detection device 24 is detachably attached, and holds the radiation image detection device 24 in a posture in which the front surface 48 a (see FIG. 3) of the radiation image detection device 24 faces the radiation source 19. To do. Since the radiation image detection device 24 has a shape conforming to the international standard ISO 4090: 2001, a film cassette or an IP cassette imaging table can be used as the imaging table 25. Moreover, although the standing position imaging stand is illustrated as the imaging stand 25, of course, it may be a lying position imaging stand that images the patient P in the lying position. In addition, when imaging an imaging region that is difficult to image with the limb (limbs) of the patient P attached to the imaging table 25, the radiological image detection device 24 is detached from the imaging table 25 and used.

  The imaging control device 26 is communicably connected to the radiological image detection device 24 and the portable console 27 by a wireless method, and controls the radiographic image detection device 24 according to an operation instruction from the portable console 27. Specifically, based on the imaging conditions transmitted from the portable console 27, the radiation image detection device 24 is set to an operation state corresponding to the imaging conditions. Furthermore, a synchronization signal for synchronizing the irradiation timing of the radiation source 19 and the detection operation of the radiation image detection device 24 is received from the radiation source control device 20 and transmitted to the radiation image detection device 24, whereby the radiation source 19 and the radiation image detection device 24 are synchronously controlled. In addition, the imaging control device 26 receives the image data output from the radiation image detection device 24 and transmits it to the portable console 27.

  The portable console 27 is a tablet-type portable information terminal that is carried by the radiographer T and used to operate the radiation image detection device 24. The portable console 27 is communicably connected to the LAN 13 and the imaging control device 26 by a wireless method. The portable console 27 acquires an imaging order that is radiography imaging request information via the LAN 13. In addition, the portable console 27 issues an operation instruction to the radiation image detection device 24 via the imaging control device 26, and receives the radiation image detected by the radiation image detection device 24 via the imaging control device 26. indicate. In addition, the portable console 27 indicates the time required for the imaging technician T to position when the imaging technician T positions the patient P and the radiation imaging system 10 in the imaging room R1 (hereinafter referred to as positioning time). taking measurement. The positioning time is used for the radiographing skill evaluation of the radiographer T.

  A hospital information system (HIS) server 30, a radiology information system (RIS) server 31, and an image server 32 are connected to the LAN 13.

  The HIS server 30 is a server for managing electronic medical records, and is accessed mainly by a medical department terminal used by medical staff such as doctors and nurses of medical departments such as internal medicine and surgery. The medical department terminal includes a portable wireless terminal such as a tablet computer carried by a nurse or doctor in addition to a desktop or notebook computer. Electronic medical records are browsed and medical information is input by these medical department terminals.

  The RIS server 31 is a server managed by the radiology department, and is an imaging order management apparatus that manages imaging orders transmitted from the clinical department to the radiology department. The radiographing order includes an order ID for identifying the radiographing order, request source information including a department name and a doctor name, basic patient information including a patient's name, age, and gender, and technique information for instructing an imaging technique. And a message such as a photographing purpose and a cautionary note from a doctor of the ordering department. The order ID is given by the RIS server 31 when the RIS server 31 accepts an imaging order from the clinical department terminal.

  An imaging technique is an imaging technique used for radiography, such as an imaging part, an imaging direction, and an imaging posture. The procedure information includes imaging parts such as the head, chest, abdomen, hands and fingers, front, side, oblique, PA (radiation from the back of the subject), AP (radiation from the front of the subject), etc. Shooting directions and shooting postures such as standing and lying. The radiographer T confirms the contents of the radiographing order with the portable console 27, determines the radiographing conditions suitable for the radiographing order, and sets the radiographing image detection device 24 and the radiation generator 17 with the determined radiographing conditions.

  The image server 32 is a server that manages image data such as a radiographic image captured by the radiation imaging apparatus 18 in accordance with the imaging order. The image server 32 can also be accessed from the medical department terminal requesting the imaging order, and a doctor in the medical department can access the image server 32 through the medical department terminal and view the radiographic image taken. .

  In FIG. 2, the radiation image detection device 24, the imaging control device 26, and the portable console 27 of the radiation imaging device 18 each have a wireless communication unit and can perform wireless communication with each other. The wireless communication unit of the radiation imaging apparatus 18 is compliant with a wireless LAN standard such as IEEE 802.11n.

  The imaging control device 26 is provided with a control unit 39 and a wireless communication unit 40. The control unit 39 comprehensively controls each unit of the imaging control device 26. The radiographic image detection device 24 and the portable console 27 are provided with wireless communication units 41 and 42, respectively. When the wireless communication units 41 and 42 are wirelessly connected to the wireless communication unit 40, wireless communication between the portable console 27 and the radiation image detection device 24 is performed via the imaging control device 26. In addition to the wireless communication unit 40, the imaging control device 26 includes a wired communication unit (not shown) that is connected to the radiation source control device 20 and receives a synchronization signal.

  From the portable console 27 to the radiation image detection device 24, there are control signals and imaging conditions including operation signals such as imaging preparation instructions input to the portable console 27 by the imaging engineer T via the imaging control device 26. Sent. When receiving the radiography preparation instruction, the radiological image detection device 24 shifts to an imaging preparation state (Ready) in which a radiographic image can be detected. In addition, a response to a control signal from the portable console 27 and a radiation image detected by the radiation image detection device 24 are transmitted from the radiation image detection device 24 to the portable console 27 via the imaging control device 26. Is done.

  The portable console 27 is communicably connected to the LAN 13 when the wireless communication unit 42 is wirelessly connected to the AP 14. The portable console 27 accesses the RIS server 31 and the image server 32 via the LAN 13. The portable console 27 accesses the RIS server 31 to acquire an imaging order, and transmits the captured radiographic image to the image server 32.

  In FIG. 3, the radiological image detection device 24 includes a sensor panel 45, a control board 46, a battery 47, a wireless communication unit 41, and a flat box-shaped portable housing 48 that houses these. . The casing 48 is made of, for example, a conductive resin. A rectangular opening is formed in the front surface 48a of the housing 48 on which the radiation is incident, and a transmission plate 49 is attached to the opening as a top plate. The transmission plate 49 is made of a carbon material that is lightweight, has high rigidity, and has high radiation transparency.

  The battery 47 supplies power to each part of the radiation image detection device 24 through a power supply circuit (not shown). The battery 47 can be taken out from the inside of the housing 48 and can be charged by being set in a dedicated charger (not shown). The wireless communication unit 41 is wirelessly connected to the imaging control device 26 and transmits / receives various information such as the above-described control signals and radiation images to / from the imaging control device 26.

  The sensor panel 45 includes a scintillator 51 that converts radiation into visible light, and a photoelectric conversion unit 52 that converts visible light into an electrical signal. The scintillator 51 and the photoelectric conversion unit 52 are stacked in the order of the photoelectric conversion unit 52 and the scintillator 51 when viewed from the radiation incident side. The photoelectric conversion unit 52 is a TFT active matrix substrate, and has an imaging region in which a plurality of pixels that accumulate charges corresponding to the incident dose of radiation are two-dimensionally arranged. The pixel is composed of a photodiode and a TFT. The scintillator 51 is made of a phosphor such as cesium iodide and is disposed so as to face the entire imaging region. The control board 46 includes a gate driver that drives the photoelectric conversion unit 52 of the sensor panel 45, a read circuit that reads an image signal from the photoelectric conversion unit, an A / D converter that converts the read image signal into digital radiation image data, A memory for storing a radiation image;

  The radiation image detection device 24 is a wireless type that performs communication by the wireless communication unit 41 and uses a battery 47 as a drive source, and thus does not include a communication cable or a power cable. For this reason, it is easy to handle, carry and position the patient P.

  As shown in FIG. 4, the portable console 27 is based on a tablet portable information terminal having a touch panel 27 </ b> A, a control program such as an operating system, and a console application for causing the portable information terminal to function as the portable console 27. It is configured by installing a program (abbreviated as console application) 27B. The console application 27B corresponds to the portable console control program of the present invention. In addition to the touch panel 27A, the portable console 27 includes a CPU 27C, a memory 27D, a storage device 27E, and a wireless communication unit 42, which are connected via a data bus 27F.

  The touch panel 27A includes a liquid crystal display 27G and a touch sensor 27H that detects contact with the display 27G. The storage device 27E is a device that stores various types of data, and includes, for example, a nonvolatile memory. The storage device 27E stores the positioning time storage unit 27J in addition to the control program and the console application 27B. The positioning time storage unit 27J stores the positioning time measured by the portable console 27.

  The memory 27D is a work memory for the CPU 27C to execute processing. The CPU 27C loads the control program stored in the storage device 27E into the memory 27D and executes processing according to the program, thereby comprehensively controlling each unit of the portable information terminal. The wireless communication unit 42 is a communication interface for wirelessly connecting to the AP 14 and the wireless communication unit 40 of the imaging control device 26.

  In FIG. 5, the positioning time storage unit 27J is a table-type database, and each record of this database stores the order ID, engineer ID, technique information, and positioning time of each radiation imaging. The order ID is extracted from the imaging order acquired from the RIS server 31. The engineer ID is identification information for identifying an individual photographer T. For example, when the console application 27B is used on the portable console 27, the engineer ID input to identify the photographer T is used. Is done. The technique information is information relating to an imaging technique used for radiography such as an imaging part, an imaging direction, and an imaging attitude, and is extracted from the imaging order together with the order ID. The positioning time is a time required for positioning the patient P and the radiation imaging system 10 by the radiographer T. More specifically, the positioning time is a time obtained by combining the time required for positioning the patient P and the radiation image detection device 24 with the time required for positioning the radiation source 19 with respect to the patient P and the radiation image detection device 24. It is.

  The positioning time is used as a material for determining the radiographing skill of the radiographer T. The skill of positioning largely depends on the experience of the photographic engineer T. Generally, the photographic engineer T having a high photographic skill tends to have a short positioning time, and the photographic engineer T having a low photographic skill tends to have a long positioning time. Therefore, the shooting skill of the shooting engineer T can be quantified by the positioning time. Since the difficulty of positioning differs depending on the imaging technique such as the imaging region, imaging direction, and imaging posture, the positioning time storage unit 27J stores the positioning time and a technique related to the radiographic imaging technique that requires the positioning time. Information is registered together.

  In FIG. 5, the positioning time storage unit 27J stores the positioning times of a plurality of imaging technicians T. However, when the portable console 27 is used only by a specific imaging technician T, the positioning times are stored. Only the positioning time of the specific photographing engineer T is stored in the storage unit 27J.

  When the console application 27B is activated on the portable console 27, an operation screen 55 based on GUI (Graphical User Interface) is displayed on the display 27G as shown in FIG. The operation screen 55 is operated when the photographing engineer T touches the touch panel 27A with a finger or the like.

  The operation screen 55 includes a patient basic information display area 56, an image display area 57, an imaging order display area 58, and an operation unit display area 59. The imaging order display area 58 is an area for displaying the imaging order 60 received from the RIS server 31. When one shooting order 60 is selected by operating the touch panel 27A, the selected shooting order 60 is displayed in reverse video so that it can be distinguished from the unselected shooting order 60. In the basic patient information display area 56, basic patient information (patient name, patient ID, sex, age) corresponding to the selected imaging order 60 is displayed.

  The portable console 27 determines that the radiographing preparation work is started by the radiographer T when any radiographing order 60 is selected in the radiographing order display area 58 of the operation screen 55, and the radiographer Measurement of positioning time by T is started.

  The imaging order display area 58 is provided with a new arrival indicator 62 that displays that a new imaging order has been received. The new arrival indicator 62 displays the number of new photographing orders. By this display, the imaging engineer T can confirm the presence or absence of a new imaging order or an additional imaging order. When confirmation is completed, such as selecting a new imaging order 60 with the touch panel 27A, the new arrival indicator 62 disappears.

  The image display area 57 is an area for displaying a radiographic image transmitted from the radiographic image detection device 24 after imaging. In FIG. 6, the image display area 57 is shown in a state where a radiation image is displayed, but nothing is displayed in the image display area 57 in a state before imaging. By displaying the radiation image in the image display area 57, it is possible to confirm the line image immediately after imaging. The radiographer T looks at the radiographic image in the image display area 57 and confirms whether or not the radiographing is properly performed. When the imaging order 60 that has been captured in the imaging order display area 58 is selected, a radiographic image corresponding to the selected imaging order 60 is displayed in the image display area 57.

  The operation unit display area 59 is provided with a setting button 64, a shooting preparation instruction button 65, a Ready indicator 66, and an order acquisition button 67. The setting button 64 is a button for performing various settings of the imaging conditions and the radiation image detection device 24. When the setting button 64 is selected on the touch panel 27A, a setting screen is displayed.

  The imaging preparation instruction button 65 is an operation button for transmitting an imaging preparation instruction to the radiation image detection device 24. By operating the imaging preparation instruction button 65, an imaging preparation instruction is transmitted from the portable console 27 to the radiation image detection device 24. When the radiographic image detection apparatus 24 receives the imaging preparation instruction, the photoelectric conversion unit 52 performs a transition process to an imaging preparation state in which charge can be accumulated, and when the transition is completed, a transition completion signal is transmitted as a response. Send to console 27. The Ready indicator 66 is lit when the portable console 27 receives a transition completion signal. The radiographer T can confirm that the radiation image detection device 24 is in a radiographing preparation state by turning on the Ready indicator 66.

  The order acquisition button 67 is a button for accessing the RIS server 31 and acquiring a photographing order. When the order acquisition button 67 is operated, a photographing order distribution request is transmitted to the RIS server 31. When there is an unacquired imaging order, the imaging order is distributed from the RIS server 31.

  As shown in FIG. 7, the wireless communication unit 42 of the portable console 27 includes an antenna 42A, a modulation / demodulation circuit 42B, a transmission control unit 42C, and the like. The modulation / demodulation circuit 42B performs modulation for placing data to be transmitted on a carrier wave and demodulation for extracting data from the carrier wave (carrier) received by the antenna 42A.

  The transmission control unit 42C performs transmission control conforming to the wireless LAN standard. Specifically, transmission control is performed according to a communication protocol compliant with TCP (Transmission Control Protocol) / IP (Internet Protocol) or a communication protocol compliant with IEEE 802.11n. As shown in an OSI (Open Systems Interconnection) reference model, communication protocols are hierarchized, and a plurality of communication protocols having different hierarchies are used in combination. TCP / IP is a communication protocol used also in a wired LAN, and is also used as an upper layer communication protocol in the wireless LAN standard. IEEE802.11n is a communication protocol located in the lower layer of TCP / IP, and prescribes communication procedures specific to radio. In IEEE 802.11n, radio waves in the 2.4 GHz band or 5 GHz band frequency band can be used as a wireless communication channel.

  In addition to the AP 14, the radio communication units 40 and 41 of the radiation image detection device 24 and the imaging control device 26 have the same configuration as the radio communication unit 42.

  Unlike wireless communication, wireless communication does not include a communication cable that is physically connected. Therefore, the wireless communication unit 42 needs to perform a logical connection with the AP 14. Hereinafter, connection and communication procedures compliant with the IEEE802.11n standard executed by the wireless communication unit 42 will be described.

  As shown in FIG. 8, in the connection sequence between the wireless communication unit 42 of the portable console 27 and the AP 14, first, the AP 14 activates a beacon signal (see BS in FIG. 7) at a predetermined time interval (approximately 100 msec interval). Sending radio waves called. The beacon signal is a signal for notifying the wireless terminal such as the portable console 27 existing around the AP 14 of the presence of the AP 14. In the portable console 27, the wireless communication unit 42 constantly monitors the presence or absence of a beacon signal during activation. Therefore, the wireless communication part 42 can always receive a beacon signal when it is within the reach of the AP 14 beacon signal.

  The beacon signal includes a network identifier such as SSID (Service Set Identifier) or ESSID (Extended Service Set Identifier). The network identifier is identification information for the wireless terminal such as the portable console 27 to identify each AP 14 and the network including them.

  The portable console 27 is set with the network identifier of each AP 14 in the medical facility, and can be connected to each AP 14. Upon receiving the beacon signal, the wireless communication unit 42 transmits a connection request to the AP 14. The AP 14 authenticates the portable console 27 that requested the connection request. Therefore, the portable console 27 includes the authentication information such as a password in the connection request and transmits it to the AP 14.

  When the AP 14 receives the connection request, the AP 14 performs authentication by comparing the received password with a preset password, and transmits a permission response to the portable console 27 if the passwords match. The permission response includes an IP (Internet Protocol) address assigned to the portable console 27 and the like. When the portable console 27 receives the permission response, a logical communication link is established, and the portable console 27 and the AP 14 are logically connected.

  With this connection, an IP address is assigned to the portable console 27 from the AP 14. The portable console 27 can be connected to the LAN 13 via the AP 14 to access the RIS server 31 and the image server 32. The upper communication procedure based on the IP address is performed according to a procedure defined by TCP / IP.

  The AP 14 continues to transmit the beacon signal even after connection with the portable console 27. While the portable console 27 can receive the beacon signal from the AP 14, the portable console 27 continues the connection with the AP 14 and ends when the portable console 27 cannot receive the beacon signal. The case where the portable console 27 cannot receive the beacon signal is, for example, a case where the portable console 27 goes out of the reach range of the AP 14 beacon signal. When the portable console 27 enters the beacon signal reachable range again and can receive the beacon signal, reconnection is performed.

  In the portable console 27, the wireless communication unit 42 has a roaming function that automatically switches the connection destination to the AP 14 having high radio field strength when receiving beacon signals from a plurality of APs 14.

  As shown in FIG. 9, for example, when the portable console 27 receives beacon signals from the first AP 14a (ID = R1) in the imaging room R1 and the second AP 14b (ID = R2) in the operation room R2, respectively. The wireless communication unit 42 connects to the AP having the higher radio field intensity of the first AP 14a and the second AP 14b based on the radio field intensity of the beacon signals of the first AP 14a and the second AP 14b. The symbols CR1 and CR2 are communication cells that are the reach ranges of the radio waves of the first AP 14a and the second AP 14b. In each of the communication cells CR1 and CR2, the farther the distance from the AP is, the more the radio wave is attenuated, and the radio wave intensity is also weakened. Specifically, in the communication cell CR1, the radio field intensity is stronger in the region CR1A closer to the first AP 14a than in the region CR1B farther from the first AP 14a. Similarly, in the communication cell CR2, the radio field intensity is higher in the region CR2A than in the CR2B.

  First, in the operation room R2, it is assumed that the portable console 27 is in the region CR2A of the communication cell CR2 and is connected to the second AP 14b. Communication cell CR1 and communication cell CR2 partially overlap. When the radiographer T carries the portable console 27 and moves from the operation room R2 to the radiography room R1, the radio communication unit 42 passes through the area where the area CR2A and the area CR1B overlap, The area CR1A moves to an overlapping area. The wireless communication unit 42 compares the radio field intensity of the beacon signal from each AP in the region where the communication cell CR2 and the communication cell CR1 overlap even while moving from the operation room R2 to the imaging room R1. As the wireless communication unit 42 moves, the AP 14 with higher radio field strength changes from the currently connected second AP 14b to the first AP 14a. Therefore, if the wireless communication unit 42 functions roaming, the region CR1A is moved during the movement. At the stage of entering, the connection destination is switched to the first AP 14a.

  As illustrated in FIG. 7, when the console application 17 </ b> B is activated, the CPU 27 </ b> C of the portable console 27 cooperates with the memory 27 </ b> D and the like, thereby causing the distribution request unit 70, the entry / exit time detection unit 71, and the occupancy time calculation unit 72. , Functions as a shooting skill analysis unit 73 and an analysis result display control unit 74.

  The distribution request unit 70 transmits a shooting order distribution request when the connection destination of the wireless communication unit 42 is switched to an appropriate AP 14 or when the order acquisition button 67 is operated on the operation screen 55. The imaging order distribution request is transmitted to the RIS server 31 via the AP 14 and the LAN 13. When the RIS server 31 receives the imaging order delivery request, the portable console 27 checks whether there is an unacquired imaging order. If there is an unacquired imaging order, the RIS server 31 performs imaging via the AP 14 of the transmission source. Deliver the order.

  The entrance / exit time detection unit 71 and the occupancy time calculation unit 72 measure the positioning time of the radiographer T during the preparation work for radiation imaging. Specifically, the entrance / exit time detection unit 71 and the occupancy time calculation unit 72 determine the time during which the radiographer T stayed in the radiographing room R1 during the radiographic preparation as the positioning time of the radiographer T. Is measured as the positioning time. As a result of analyzing the workflow in the radiography inspection work, it is known that the imaging technician T who is present in the imaging room R1 during the radiographic preparation work spends most of his time on positioning. Therefore, the positioning time of the radiographer T can be specified by measuring the time during which the radiographer T stays in the radiographing room R1 during the preparation work for radiation imaging.

  The entry / exit time detection unit 71 measures the time in which the imaging technician T enters the imaging room R1 while carrying the portable console 27 in order to measure the in-room time in the imaging room R1. The time when the user leaves the room is detected. Further, the entry / exit time detection unit 71 specifies that the radiographic imaging preparation has started when the imaging order 60 to be imaged next is selected in the imaging order display area 58 of the operation screen 55, Start detection of entry / exit time.

  Each time the wireless communication unit 42 switches the connection destination AP 14 by the roaming function, a network identifier (for example, SSID) that is identification information of the newly connected AP 14 is input from the wireless communication unit 42 to the entry / exit time detection unit 71. The The entry / exit time detection unit 71 identifies the current position of the imaging engineer T based on the SSID input from the wireless communication unit 42, and when the AP 14 that is the connection destination of the wireless communication unit 42 is switched, the AP 14 that is the switching destination. By detecting the position where the imaging technician T has moved based on the SSID received from, the movement time is detected as the entry time and the exit time to the photography room R1.

  For example, as shown in FIG. 10, when the radio communication unit 42 is connected to the second AP 14b of the operation room R2 at the start of radiation imaging preparation work (at the start of entry / exit time detection), the entry / exit is performed. The time detection unit 71 determines that the imaging engineer T is in the operation room R2, and waits for the imaging engineer T to move to the imaging room R1. The entrance / exit time detection unit 71 moves from the operation room R2 to the imaging room R1 while the imaging technician T carries the portable console 27, and the connection destination of the wireless communication unit 42 is from the second AP 14b of the operation room R2 to the imaging room R1. When the SSID is transmitted from the first AP 14a to the wireless communication unit 42, the transmission time is set as the entry time to the photographing room R1. The entrance / exit time detection unit 71 moves from the imaging room R1 to the operation room R2 while the imaging technician T carries the portable console 27, and the connection destination of the wireless communication unit 42 is operated from the first AP 14a of the imaging room R1. When switching to the second AP 14b of the room R2 and the SSID is transmitted from the second AP 14b to the wireless communication unit 42, the transmission time is set as the leaving time from the imaging room R1.

  In addition, as shown in FIG. 11, when the radio communication unit 42 is connected to the first AP 14a of the imaging room R1 at the start of the radiation imaging preparation work, the entry / exit time detection unit 71 It is determined that the user is already in the shooting room R1, and the start time of the preparation work is set as the entry time to the shooting room R1. The entrance / exit time detection unit 71 moves from the imaging room R1 to the operation room R2 while the imaging technician T carries the portable console 27, and the connection destination of the wireless communication unit 42 is operated from the first AP 14a of the imaging room R1. When switching to the second AP 14b of the room R2 and the SSID is transmitted from the second AP 14b to the wireless communication unit 42, the transmission time is set as the leaving time from the imaging room R1. In this way, the entry / exit time detection unit 71 detects the entry / exit time of the imaging engineer T with respect to the imaging room R1 according to the position of the imaging engineer T at the start of the radiation imaging preparation work.

  The occupancy time calculation unit 72 subtracts the occupancy time from the evacuation time detected by the occupancy time detector 71 to calculate the occupancy time that the imaging engineer T was in the imaging room R1. As described above, the radiographer T who is present in the radiographing room R1 during the radiographing preparatory work spends most of the time on positioning. Can be specified as the positioning time.

  In the general workflow of radiography, the radiographer T finishes positioning the patient P and the radiography system 10 and moves from the imaging room R1 to the operation room R2, and then looks into the imaging room R1 from the operation room R2. Thus, the patient P is confirmed, and when the patient P moves and there is a deviation in positioning, the procedure returns to the imaging room R1 to perform positioning again. When the positioning is performed again, as shown in FIG. 12, the entry / exit time detection unit 71 detects a plurality of times of entry and exit from the photographing room R1, and a plurality of in-room times, for example, in-room Time A and occupancy time B occur. In such a case, the occupancy time calculation unit 72 sets the integrated value of the occupancy times as the positioning time. Therefore, it is possible to calculate an accurate positioning time including repositioning.

  The occupancy time calculated by the occupancy time calculation unit 72 is stored in the positioning time storage unit 27J together with the order ID and procedure information extracted from the imaging order.

  The shooting skill analysis unit 73 reads the positioning time from the positioning time storage unit 27J when the analysis of the shooting skill is instructed by the portable console 27, and analyzes the shooting skill of the shooting engineer T based on the read positioning time. . Specifically, the shooting skill analysis instruction is instructed together with the engineer ID of the shooting engineer T and the name of the shooting engineer T, for example. The imaging skill analysis unit 73 reads out the positioning time of the instructed imaging technician T from the positioning time storage unit 27J, calculates an average positioning time for each imaging technique based on the read positioning time, and determines the imaging technique or patient P's Skill analysis such as calculating the number of shootings by age.

  The analysis result display control unit 74 creates an analysis result display screen for displaying the analysis result of the imaging skill analysis unit 73 and displays it on the display 27G. As shown in FIG. 13, the analysis result display screen 77 displays, for example, an average positioning time comparison graph 78, a procedure count comparison graph 79, an age count comparison graph 80, and the like. The photographing engineer T can grasp his / her photographing skill based on the graphs 78 to 80 on the analysis result display screen 77 and can set it as a goal such as training or self-study.

  The operation of the positioning time measurement and the shooting skill analysis based on the positioning time will be described with reference to the flowcharts shown in FIGS. The radiographer T always carries the portable console 27 during the radiography operation. The radiographer T activates the console application 27B (see FIG. 4) of the portable console 27 in the imaging room R1 or the operation room R2 (see FIG. 1), and the portable console 27 is connected to the first AP 14a or the second AP 14b and the LAN 13. To the RIS server 31.

  The imaging engineer T operates the order acquisition button 67 on the operation screen 55 (see FIG. 6) of the portable console 27. When the order acquisition button 67 is operated, a photographing order distribution request is transmitted from the portable console 27 to the RIS server 31. When the RIS server 31 receives the imaging order distribution request, the portable console 27 distributes the imaging order that has not been acquired. As a result, the portable console 27 acquires the photographing order scheduled for photographing. The radiographer T confirms the radiographing order received on the operation screen 55 of the portable console 27 and selects the radiographing order 60 for starting radiography from the radiographing order display area 58.

  The radiographer T calls the patient P to be examined in the selected radiographing order 60 from the waiting room, and enters the radiographing room R1 together with the patient P through the door R2a and the door R1a. The imaging engineer T starts preparation work for radiation imaging in the imaging room R1. In this preparation work, positioning of the patient P and the radiation imaging system 10, setting of imaging conditions for the radiation generator 17 and the radiation image detection device 24, and an imaging preparation instruction for the radiation image detection device 24 are performed. In positioning the patient P and the radiographic system 10, the patient P and the radiological image detection device 24 are positioned, and the radiation source 19 is positioned with respect to the patient P and the radiographic image detection device 24. The photographic engineer T moves from the photographic room R1 to the operation room R2 after completing the preparatory work including positioning.

  In FIG. 14, when the imaging order 60 is selected by the imaging technician T on the operation screen 55 of the portable console 27 (S10), the entry / exit time detection unit 71 (see FIG. 7) of the portable console 27 performs radiography. It is determined that the preparatory work is started, and the detection of the entry / exit time is started (S11).

  In FIG. 15, the entry / exit time detection unit 71 detects the current position of the imaging technician T based on the SSID of the AP 14 input from the wireless communication unit 42 (S20). When it is determined that the imaging technician T is in the operation room R2 (NO in S21), the entrance / exit time detection unit 71 waits for the imaging technician T to move to the imaging room R1 (S22). The entrance / exit time detection unit 71 moves from the operation room R2 to the imaging room R1 while the imaging technician T carries the portable console 27, and the connection destination of the wireless communication unit 42 is from the second AP 14b of the operation room R2 to the imaging room R1. When the SSID is transmitted from the first AP 14a to the wireless communication unit 42 (YES in S22), the transmission time is detected as the entry time to the photographing room R1 (S23). The entrance / exit time detection unit 71 moves from the imaging room R1 to the operation room R2 while the imaging technician T carries the portable console 27, and the connection destination of the wireless communication unit 42 is operated from the first AP 14a of the imaging room R1. When the second AP 14b of the room R2 is switched to and the SSID is transmitted from the second AP 14b to the wireless communication unit 42 (YES in S24), the transmission time is detected as the leaving time from the photographing room R1 (S25).

  Further, when it is determined that the radiographer T is already in the radiographing room R1 at the start of the radiographic imaging preparation work (YES in S21), the entrance / exit time detection unit 71 starts the preparatory work start time. Is set as the entrance time to the photographing room R1 (S26). The exit time of the imaging technician T from the imaging room R1 is similarly detected using steps S24 and S25.

  In FIG. 14, the occupancy time calculation unit 72 subtracts the entry time from the evacuation time detected by the entry / exit time detection unit 71 to calculate the occupancy time that the imaging engineer T was in the imaging room R1 (S12). The occupancy time calculated by the occupancy time calculation unit 72 is stored in the positioning time storage unit 27J together with the order ID and procedure information extracted from the imaging order (S13).

  The imaging technician T who has moved to the operation room R2 after completing the preparatory work including positioning confirms with the ready indicator 66 on the operation screen 55 that the radiation image detection device 24 has shifted to the imaging preparation state (Ready). Then, after looking into the imaging room R1 and confirming that the posture of the patient P is appropriate, the door R1a between the imaging room R1 and the operation room R2 is closed, and the irradiation switch 21 is operated in the operation room R2. To start radiography. When the irradiation switch 21 is operated, the radiation source 19 starts irradiation of radiation.

  When the irradiation switch 21 is operated, the radiation source control device 20 transmits a synchronization signal to the imaging control device 26. The imaging control device 26 transmits the received synchronization signal to the radiation image detection device 24. In the radiation image detection device 24, the sensor panel 45 shifts to an accumulation operation in synchronization with the radiation irradiation from the radiation source 19, and image detection is performed.

  The radiation source 19 ends the radiation irradiation when the irradiation time has elapsed. The radiation image detection device 24 ends the accumulation operation after the irradiation time has elapsed, and reads out the radiation image. The read radiation image is transmitted from the wireless communication unit 41 to the portable console 27 via the imaging control device 26. The portable console 27 receives a radiation image by the wireless communication unit 42. The radiographer T confirms the radiation image received by the portable console 27. The confirmed radiographic image is transmitted from the portable console 27 to the image server 32. Thus, one shooting is completed.

  In FIG. 16, the imaging engineer T operates the portable console 27 outside the inspection work time, and instructs the analysis of his / her imaging skill (S30). The shooting skill analysis unit 73 (see FIG. 7) reads the positioning time from the positioning time storage unit 27J when an instruction to analyze shooting skills is given by the portable console 27 (S31), and shooting is performed based on the read positioning time. Skill analysis, such as calculating the average positioning time for each procedure and calculating the number of radiographs for each imaging procedure or each age of the patient P (S32).

  The analysis result display control unit 74 creates an analysis result display screen 77 (see FIG. 13) based on the analysis result of the imaging skill analysis unit 73 and displays it on the display 27G (S33). On the analysis result display screen 77, for example, an average positioning time comparison graph 78, a procedure-specific number comparison graph 79, an age-specific number comparison graph 80, and the like are displayed. The photographing engineer T can grasp his / her photographing skill based on the graphs 78 to 80 on the analysis result display screen 77 and can set it as a goal such as training or self-study.

  As described above, the entrance / exit time detection unit 71 is based on the SSID of the AP 14 input from the wireless communication unit 42, and the entrance time of the radiographer T to the imaging room R1 during the radiation imaging preparation work. The exit time is detected. The occupancy time calculation unit 72 calculates the occupancy time of the imaging room R1 of the imaging engineer T based on the entrance time and the exit time detected by the entrance / exit time detection unit 71. The calculated occupancy time is stored in the positioning time storage unit 27J together with the technique information as the positioning time of the imaging technician T. It is known that the photographing engineer T who is present in the photographing room R1 during the preparatory work for radiation photographing spends most of his time for positioning. In addition, the photographing skill of the photographing engineer T can be quantified and appropriately evaluated based on the positioning time of the photographing engineer T. Therefore, since the imaging engineer T can be trained based on the accurate skill evaluation of the imaging engineer T, the efficiency of the radiographic imaging inspection work can be improved.

  In addition, since the entry / exit time of the imaging engineer T with respect to the imaging room R1 can be performed based on the connection switching between the wireless communication unit 42 of the portable console 27 and the AP 14, a communication network including the LAN 13 and the AP 14 is constructed. If it is a medical facility, the positioning time can be measured without introducing a large-scale system such as a conventional workflow analysis report creation system.

  Further, the imaging skill analysis unit 73 can analyze the imaging skill of the imaging engineer T based on the measured positioning time, and the analysis result display control unit 74 can display the analysis result display screen 77 on the display 27G. Since the photographing engineer T can easily grasp his / her own photographing skill and can set a goal such as training or self-study, the photographing engineer T can improve the skill. In addition, the efficiency of the inspection work is improved by improving the skill of the photographer T.

  Hereinafter, second to sixth embodiments of the present invention will be described. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and detailed description is abbreviate | omitted.

[Second Embodiment]
In the first embodiment, the example in which the AP 14 is installed in both the imaging room R1 and the operation room R2 has been described. However, depending on the medical facility, the AP 14 is installed only in either the imaging room R1 or the operation room R2. Sometimes it is. In such a case, even if the imaging engineer T carries the portable console 27 and enters and exits the imaging room R1, the connection with the AP 14 is not switched by the roaming function of the wireless communication unit 42, and therefore, based on the SSID of the AP 14. The entry / exit time cannot be detected. In the present embodiment, even when the AP 14 is installed only in one of the imaging room R1 and the operation room R2, the entrance / exit time of the imaging engineer T with respect to the imaging room R1 can be detected.

  As shown in FIG. 17, the portable console 85 of the present embodiment uses the entrance / exit time detection unit 86 having a radio field intensity measurement function to determine the radio wave intensity when communication is performed between the radio communication unit 42 and the AP 14. Based on the measurement result, the entrance / exit time of the imaging technician T with respect to the imaging room R1 is detected.

  FIG. 18 shows a state where the AP 14 is installed only in the photographing room R1. The code CR1 is a communication cell that is the reach of radio waves of the AP14. In the communication cell CR1, as the distance from the AP 14 increases, the radio wave attenuates and thus the radio wave intensity also decreases. Therefore, in the communication cell CR1, the radio wave intensity of the communication cell CR1A in the imaging room R1 that is close to the AP 14 is stronger in the communication cell in the operation room R2 that is far from the AP 14 than the CR1B. Therefore, a threshold value of radio wave intensity that can distinguish between when the portable console 85 is inside the photographing room R1 and when it is outside the photographing room R1 is set in advance and measured by the entrance / exit time detection unit 86. By comparing the radio field intensity with the threshold value, it is possible to detect the time when the photographing engineer T carrying the portable console 85 enters and leaves the photographing room R1. In this case, if the measured radio field intensity is weaker than the threshold value, it can be determined that the imaging technician T is in the operation room R2, and if the measured radio field intensity is higher than the threshold value, the imaging engineer T It can be determined that the user is in the shooting room R1.

  FIG. 18 shows an example in which the AP 14 is installed only in the photographing room R1, but even when the AP 14 is installed only in the operation room R2, the radio wave intensity during communication between the AP 14 and the wireless communication unit 42 is similarly performed. By comparing the preset threshold value, the entry / exit time of the imaging technician T with respect to the imaging room R1 can be detected. In this case, if the measured radio field intensity is stronger than the threshold value, it can be determined that the imaging technician T is in the operation room R2, and if the measured radio field intensity is weaker than the threshold value, the imaging engineer T It can be determined that the user is in the shooting room R1.

  As described above, according to the present embodiment, even when the AP 14 is installed only in one of the imaging room R1 and the operation room R2, the entry / exit time of the imaging engineer T with respect to the imaging room R1 is detected. Therefore, the occupancy time of the photographic room R1 representing the positioning time of the photographic engineer T can be measured.

[Third Embodiment]
In the first embodiment, the AP 14 that is a wireless repeater is used as a wireless communication device used to detect the entry / exit time of the imaging engineer T with respect to the imaging room R1, but depending on the medical facility, the imaging room R1 and the operation room R2 In some cases, the AP 14 is not installed. In such a case, a wireless communication tag may be used as a wireless communication device that replaces the AP 14. As is well known, the wireless communication tag is a tag-like wireless communication device that transmits wireless radio waves including identification information and the like.

  As shown in FIG. 19, in this embodiment, a first wireless communication tag 90A and a second wireless communication tag 90B that transmit an identification signal indicating an installation location by wireless radio waves are installed in the photographing room R1 and the operation room R2. ing. The installation location of the first wireless communication tag 90A and the second wireless communication tag 90B can be selected in accordance with the reach of the radio wave, and the wall surface and ceiling of the photographing room R1 and the operation room R2, the photographing room R1 and the operation room. You may attach to the apparatus installed in R2, for example, the radiographic image detection apparatus 24, the imaging stand 25, etc.

  As shown in FIG. 20, the portable console 91 of the present embodiment is provided with a tag reader 92 as a wireless communication unit used for detecting the entry / exit time of the imaging engineer T with respect to the imaging room R1. The tag reader 92 receives radio waves transmitted from the first radio communication tag 90 </ b> A and the second radio communication tag 90 </ b> B, and inputs an identification signal included in the radio waves to the entrance / exit time detection unit 93. The entrance / exit time detection unit 93, like the entrance / exit time detection unit 71 of the first embodiment, shoots based on the time when the tag reader 92 receives wireless radio waves from the first wireless communication tag 90A and the second wireless communication tag 90B. The entrance / exit time of the photography engineer T for the room R1 is detected.

  Specifically, when the tag reader 92 receives a radio wave from the first radio communication tag 90A, the entrance / exit time detection unit 93 is based on the reception time of the radio wave and the identification information included in the radio wave. The time when the photographing engineer T entered the photographing room R1 is detected. When the tag reader 92 receives a radio wave from the second radio communication tag 90B, the entrance / exit time detection unit 93 is based on the radio wave reception time and the identification information included in the radio wave. The time when T leaves the shooting room R1 is detected.

  As described above, according to the present embodiment, even when the AP 14 is not installed in either the imaging room R1 or the operation room R2, the entry / exit time of the imaging engineer T with respect to the imaging room R1 can be detected. Therefore, the occupancy time of the photographic room R1 that represents the positioning time of the photographic engineer T can be measured.

[Fourth Embodiment]
In the third embodiment, when the AP 14 is not installed in either the imaging room R1 or the operation room R2, the wireless communication tags 90A and 90B and the tag reader 92 are used. However, a portable information terminal used as a portable console is used. The entrance / exit time of the imaging engineer T with respect to the imaging room R1 may be detected using a standard GPS (Global Positioning System) function.

  As shown in FIG. 21, the portable console 95 of this embodiment includes a GPS receiver 96 as standard. The GPS receiver 96 receives a GPS signal from the GPS satellite 97, and calculates measurement coordinates representing the current position based on the GPS signal. The measurement coordinates calculated by the GPS receiver 96 are input to the entry / exit time detector 98. The entrance / exit time detection unit 98 stores the position coordinates of the imaging room R1 and the operation room R2 in advance, and compares the position coordinates with the measurement coordinates calculated by the GPS receiving unit 96, thereby allowing the portable console to be used. It is possible to specify the current position of the photographer T who carries 95. Therefore, by using the time at which the GPS receiving unit 96 receives the GPS signal from the GPS satellite and the position represented by the GPS signal received at this time, the entry / exit time of the photographing engineer T with respect to the photographing room R1 can be detected. Can do.

  As described above, according to the present embodiment, even when the AP 14 is not installed in any of the imaging room R1 and the operation room R2, the imaging room R1 is used by using the GPS function that the portable information terminal has as a standard. Since the entrance / exit time of the imaging engineer T with respect to can be detected, the occupancy time of the imaging room R1 representing the positioning time of the imaging engineer T can be measured.

[Fifth Embodiment]
In the first embodiment, the in-room time detection unit 71 and the in-room time calculation unit 72 of the portable console 27 measure the in-room time in the imaging room R1 that represents the positioning time of the imaging engineer T. In the case of having the function of measuring the positioning time, the positioning time measured by the radiation imaging system may be acquired and stored in the positioning time storage unit 27J.

  As shown in FIG. 22, the radiation imaging system 100 of this embodiment includes a positioning time measurement unit 101 that measures the positioning time by the imaging technician T. As the positioning time measurement unit 101, for example, a relative movement detection sensor that is incorporated in the radiation image detection device 24 and detects a relative movement with the patient P, and a detection signal output from the relative movement detection sensor is used. A calculation unit that calculates the positioning time based on the time interval of the detection signal indicating the start and the end can be used. As the relative movement detection sensor, a movement sensor such as a gyroscope or an acceleration sensor can be used. Moreover, it replaces with a movement sensor and uses the pressure sensor which detects the pressure added to the radiographic image detection apparatus 24 by the patient P, and the temperature sensor which measures the temperature change of the radiographic image detection apparatus 24 by the contact with the patient P. Alternatively, a movement sensor, a pressure sensor, and a temperature sensor may be appropriately combined.

  Further, the positioning time measuring unit 101 is a positioning sensor based on the time interval of the detection signal indicating the start and end of positioning among the movement sensor that detects the movement of the radiation source 19 and the detection signal output from the movement sensor. You may use the calculation part which calculates.

  As shown in FIG. 23, the portable console 102 of this embodiment specifies whether or not the radiation imaging system 100 includes a positioning time measuring unit 101 (S40). The presence / absence of the positioning time measuring unit 101 may be specified based on the contents set in the portable console 102 by the imaging engineer T, or by performing wireless communication or wired communication with the radiation source control device 20 or the imaging control device 26. Information regarding the presence or absence of the positioning time measuring unit 101 may be acquired.

  When the radiographic imaging system 100 does not include the positioning time measurement unit 101 (NO in S40), the portable console 102 measures the positioning time by using the entry / exit time detection unit 71 and the occupancy time calculation unit 72 (S41). ). When the radiation imaging system 100 includes the positioning time measurement unit 101 (YES in S40), the portable console 102 performs wireless communication or wired communication with the radiation source control device 20 or the imaging control device 26, The positioning time measured by the positioning time measuring unit 101 is acquired (S42). The positioning time storage unit 27J stores the positioning time measured by the positioning time measurement unit 101 together with the order ID and procedure information extracted from the imaging order (S43).

  As described above, according to the present embodiment, when the radiation imaging system 100 includes the positioning time measuring unit 101, a positioning time that is more accurate than the time in the imaging room R1 of the imaging technician T is set. Since it can be acquired, a more accurate evaluation of shooting skills can be performed.

[Sixth Embodiment]
In the first embodiment, the positioning time is stored in the portable console 27, the shooting skill is analyzed based on the positioning time on the portable console 27, and the analysis result display screen 77 is displayed. Storage, shooting skill analysis, and creation of an analysis result display screen may be performed by a skill analysis server provided separately from the portable console 27.

  As shown in FIG. 24, the portable console 105 according to the present embodiment includes the occupancy time (positioning time) calculated by the occupancy time calculation unit 72 and the order extracted from the imaging order instead of the positioning time storage unit. A positioning time information transmitting unit 106 that transmits positioning time information including an ID and procedure information by the wireless communication unit 42 is provided.

  A skill analysis server 108 is connected to the LAN 13. The skill analysis server 108 is a desktop computer having the same configuration as the portable console 27 shown in FIG. 4. By starting the server program, the CPU 108A causes the communication unit 109, the positioning time information storage unit 110, and the photographing. It functions as a skill analysis unit 111 and an advice information creation unit 112. The communication unit 109 communicates with the wireless communication unit 42 via the LAN 13 and the AP 14 and receives positioning time information from the wireless communication unit 42. The positioning time information storage unit 110 is a database that stores the positioning time information received by the communication unit 109. The positioning time information storage unit 110 stores positioning time information when a plurality of imaging technicians T respectively photograph with the portable console 105.

  When a shooting skill analysis request is transmitted from the portable console 15 by specifying the shooting engineer T, the shooting skill analysis unit 111 is a positioning time information storage unit, similar to the shooting skill analysis unit 73 of the first embodiment. Based on the positioning information read from 110, the shooting skill of the shooting engineer T is analyzed. The advice information creating unit 112 creates advice information for the photographing engineer T based on the analysis result of the photographing skill analyzing unit 73. The communication unit 109 also functions as a distribution unit of the present invention, creates an analysis result display screen based on the analysis result of the shooting skill analysis unit 73 and the advice information of the advice information creation unit 112, and distributes it to the portable console 105. .

  As shown in FIG. 25, on the analysis result display screen 114, for example, an average positioning time comparison graph 115, a procedure-specific number comparison graph 116, etc. of the imaging engineer T designated by the analysis request are displayed. Also, as the advice information created by the advice information creation unit 112, a recommended book 117 and a recommended case image 118 that are useful for improving the skill of the imaging technician T are displayed. For the recommended book 117, for example, a book database that the skill analysis server 108 has in advance and a search result from the Internet are displayed. Further, as the recommended case image 118, for example, a case image searched by the skill analysis server 108 from the image server 32 is displayed.

  The imaging skill analysis unit 111 can also analyze and compare imaging skills of a plurality of imaging technicians T belonging to the radiology department according to an instruction from a radiology engineer chief or the like. As shown in FIG. 26, the analysis result display screen 120 on which the imaging skill analysis results of a plurality of imaging technicians T are displayed includes, for example, an average positioning time comparison graph 121 for each imaging technician, a number-by-procedure comparison graph 122, A number comparison graph 123 by age is displayed.

  As described above, according to the present embodiment, the skill analysis server 108 stores the positioning time, analyzes the shooting skill, and creates the analysis result display screen. Therefore, the processing speed is higher than that of a desktop computer. It is possible to reduce the work load of a portable console with a low level. In addition, since the imaging skills of a plurality of imaging technicians T such as radiology units can be collectively analyzed, the imaging skills of a plurality of imaging technicians T can be compared.

  Although the skill analysis server 108 is provided individually, the function of the skill analysis server 108 may be incorporated in the HIS server 30 or the RIS server 31. In addition, the example in which the analysis result of the imaging skill analyzed by the skill analysis server 108 is distributed to the portable console 105 has been described. However, the desktop type client terminal installed in the radiology department, the imaging engineer T, and the imaging engineer T You may make it deliver to other terminal devices, such as a portable information terminal which a boss has.

  In each of the above embodiments, it is specified that the radiation imaging preparation work is started when the imaging order 60 is selected on the portable console. However, the portable console can be instructed to start the preparation work. A function may be provided. Although the radiation imaging system 10 has been described as an example of a medical imaging apparatus, the present invention can also be applied to a medical imaging apparatus that gives an imaging instruction outside the imaging room, such as a CT (Computed Tomography) apparatus or an MRI (magnetic resonance imaging) apparatus. It is.

  In each of the above embodiments, an example in which a synchronization signal is transmitted from the radiation source control device 20 to the imaging control device 26 in order to synchronize the irradiation timing of the radiation source 19 and the detection operation of the radiation image detection device 24 has been described. When the radiation image detection device 24 has a function of detecting radiation irradiation and automatically starting a radiation image detection operation, transmission of a synchronization signal from the radiation source control device 20 to the imaging control device 26 is omitted. can do.

  Further, the radiation image detection device 24 has an automatic exposure function that measures the accumulated dose of radiation emitted from the radiation source 19 and stops the radiation source 19 from irradiating radiation when the accumulated dose reaches a preset value. You may use what has. Furthermore, although the example provided with the portable radiographic image detection apparatus 24 and the imaging | photography control apparatus 26 was demonstrated as the radiography apparatus 18, an imaging control apparatus is incorporated by incorporating the function of the imaging | photography control apparatus 26 in the radiographic image detection apparatus 24. FIG. A radiation imaging apparatus having a form in which 26 is omitted may be used.

DESCRIPTION OF SYMBOLS 10, 100 Radiography system 14 Access point 17 Radiation generator 18 Radiography apparatus 24 Radiation image detection device 27 Portable console 27J Positioning time storage part 31 RIS
71, 86, 93, 98 Entrance / exit time detection unit 72 Residential time calculation unit 73, 111 Imaging skill analysis unit 74 Analysis result display control unit 77 Analysis result display screen 90A, 90B Wireless communication tag 92 Tag reader 96 GPS reception unit 101 Positioning Time measurement unit 106 Positioning time information transmission unit 108 Skill analysis server 109 Communication unit 110 Positioning time information storage unit 111 Imaging skill analysis unit 112 Advice information creation unit

Claims (15)

A portable console of the medical imaging apparatus carried by an imaging engineer who performs setting of imaging conditions according to the imaging technique with respect to the medical imaging apparatus installed in the imaging room,
An entry / exit time detection unit that detects an entry time of the photography engineer into the photography room and an exit time from the photography room;
Based on the entry time and the exit time, an occupancy time calculation unit that calculates an occupancy time of the imaging room of the imaging technician,
Positioning time storage for storing the occupancy time when taking a medical image by the imaging technique as a positioning time used for relative alignment between the subject and the medical imaging apparatus in association with the imaging technique And
Portable console with   2. The portable console according to claim 1, wherein the positioning time is an integrated value of the occupancy time within a time period from the start of photographing preparation work to the start of photographing.   A wireless communication unit that communicates with a wireless communication device installed in at least one of the photographing room and the outside of the photographing room, wherein the entry / exit time detection unit includes the wireless communication unit and the wireless communication device; The position at which the imaging technician has moved is identified based on communication with the camera, and the time at which the imaging technician has moved into the imaging room and the time at which the imaging technician has moved out of the imaging room are detected as the entry time and the exit time. The portable console according to claim 1 or 2.   The wireless communication device is connected to the first wireless communication device connected to the wireless communication unit when the imaging technician moves into the examination room, and connected to the wireless communication unit when the imaging technician moves out of the examination room. The entry / exit time detection unit is configured such that when the wireless communication unit switches connection between the first wireless communication device and the second wireless communication device, the wireless communication unit The portable console according to claim 3, wherein the current position is specified based on identification information acquired from the first wireless communication device and the second wireless communication device.   The portable console according to claim 3, wherein the entry / exit time detection unit specifies a position where the imaging technician has moved based on a radio wave intensity between the wireless communication unit and the wireless communication device.   The portable console according to claim 3, wherein the wireless communication device is a wireless repeater that relays connection between the wireless communication unit and a communication network.   The portable console according to any one of claims 3 to 5, wherein the wireless communication device and the wireless communication unit are a wireless communication tag that transmits a radio wave and a tag reader that receives a radio wave transmitted from the wireless communication tag. .   The portable console according to claim 1 or 2, wherein the entry / exit time detection unit is a GPS reception unit that specifies a position and time of movement of the imaging technician based on a GPS signal.   The positioning time storage unit stores the positioning time acquired from the medical imaging device in association with the imaging technique when the medical imaging device has a function of measuring the positioning time. The portable console according to any one of 1 to 8.   The portable console according to claim 9, wherein the medical imaging apparatus is a portable radiographic image detection apparatus that detects a radiographic image from radiation transmitted through the subject.   11. The portable type according to claim 1, further comprising: a skill analysis unit that analyzes the imaging skill of the imaging technician based on the positioning time; and an analysis result display control unit that displays the analysis result on a display. console. A method for controlling a portable console of the medical image photographing apparatus carried by a photographing engineer for setting a photographing condition according to a photographing technique for a medical image photographing apparatus installed in a photographing room,
An entry / exit time detection step for detecting an entry time of the photography engineer into the photography room and an exit time from the photography room;
An occupancy time calculating step of calculating an occupancy time of the imaging room of the imaging technician based on the entry time and the exit time;
The occupancy time when taking a medical image with the imaging technique is set as a positioning time used for relative alignment between the subject and the medical image imaging apparatus in the positioning time storage unit in association with the imaging technique. A positioning time storing step to store;
A method for controlling a portable console comprising: A control program for a portable console of the medical image photographing apparatus carried by a photographing engineer for setting a photographing condition according to a photographing technique for a medical image photographing apparatus installed in a photographing room,
An entry / exit time detection step for detecting an entry time of the photography engineer into the photography room and an exit time from the photography room;
An occupancy time calculating step of calculating an occupancy time of the imaging room of the imaging technician based on the entry time and the exit time;
The occupancy time when taking a medical image with the imaging technique is set as a positioning time used for relative alignment between the subject and the medical image imaging apparatus in the positioning time storage unit in association with the imaging technique. A positioning time storing step to store;
Is a control program for a portable console that causes a portable information terminal to execute. Based on the portable console of the medical imaging apparatus carried by the imaging engineer who sets the imaging conditions according to the imaging technique for the medical imaging apparatus installed in the imaging room, and information acquired from the portable console In a shooting skill analysis system comprising a skill analysis server that analyzes the shooting skill of the shooting engineer,
The portable console is
An entry / exit time detection unit that detects an entry time of the photography engineer into the photography room and an exit time from the photography room;
Based on the entry time and the exit time, an occupancy time calculation unit that calculates an occupancy time of the imaging room of the imaging technician,
The occupancy time when taking a medical image by the imaging technique is set as a positioning time used for relative alignment between the subject and the medical imaging apparatus, and the positioning time and the imaging technique are associated with each other. A positioning time information transmitting unit that transmits positioning time information to the skill analysis server,
The skill analysis server
A positioning time information storage unit for storing the positioning time information transmitted from the portable console;
Based on the positioning time information, a skill analysis unit that analyzes shooting skills for each shooting technique of the shooting engineer,
A shooting skill analysis system comprising: a distribution unit that distributes the analysis result to the portable console.   The imaging skill analysis system according to claim 14, wherein the imaging skill analysis server includes an advice information creation unit that creates advice information for the imaging engineer based on the analysis result.

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